I can not start RAC instances of Oracle RAC database

Hi Experts,
I have a big problem. Recently we have taken a responsibility of a new system which db is oracle 10g and RAC is configured (Windows 2003 Servers). But when I execute i see that nodes status are not running. But instances are up and i can connect them within sqlplus.

When we got the system from other company, we have changed sys password. After that time we couldnt login " sqlplus / as sysdba" . That was because the pwd<instance>.ora was invalid. To solve this, I have changed Authentication type from None to NTS in sqlnet.ora . And in Active Directory Users and Computers added the db servers in to pre-windows 2000 authentication group from member of section of properties page.
then I could login as / as sysdba.

you can see thet crs services connect instances with out password (/ as sysdba)
type crs_stat -p then you will see the detailed info on crs applications.

So, I am closing the question

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